نتایج جستجو برای: lake ontario
تعداد نتایج: 59377 فیلتر نتایج به سال:
We analyze observations of Titan’s south polar lake Ontario Lacus obtained by Cassini ’s Visual and Infrared Mapping Spectrometer during the 38th flyby of Titan (T38; 2007 December 5). The near-closest-approach observations have the highest signal-to-noise, the finest spatial resolution, and the least atmospheric influence of any near-infrared lake observation to date. We use the large, spatial...
In this paper new maps are presented of mean circulation in the Great Lakes, employing long-term current observations from about 100 Great Lakes moorings during the 1960s to 1980s. Knowledge of the mean circulation in the Great Lakes is important for ecological and management issues because it provides an indication of transport pathways of nutrients and contaminants on longer time scales. Base...
Mirex is a persistent and toxic polychlorinated pesticide that has compromised environmental quality in the Great Lakes region since the 1960s. As a bioaccumulative and carcinogenic compound, mirex at its current levels in Lake Ontario is a concern because of the potential for trophic level transfer and biomagnification in top predators. As a part of the NOAA’s National Status and Trends Progra...
a Mental Health Services and Policy Program, Department of Psychiatry and Behavioral Sciences, Feinberg School of Medicine, Northwestern University, 710 North Lake Shore Drive, Suite 1200, Chicago, IL 60611, USA b Mental Health Services and Policy Program, Department of Psychiatry and Behavioral Sciences, Feinberg School of Medicine, Northwestern University, 710 North Lake Shore Drive, Suite 90...
Address correspondence to Dr. Jack Barkin, Humber River Regional Hospital, 404-960 Lawrence Avenue West, Toronto, ON M6A 3B5 Canada UroLift system for relief of prostate obstruction under local anesthesia Jack Barkin, MD,1 Jonathan Giddens, MD,2 Peter Incze, MD,3 Richard Casey, MD,3 Stephen Richardson, MD,4 Steven Gange, MD4 1Humber River Regional Hospital, University of Toronto, Toronto, Ontar...
Article history: Received 20 July 2015 Accepted 13 November 2015 Available online 8 January 2016 Communicated by Craig Stow Weevaluate the temporal trends of totalmercury (THg) andpolychlorinated biphenyls (PCBs) inwalleye (Sander vitreus) and lake trout (Salvelinus namaycush) based on approximately 40 years of contaminant data from different locations in Lake Ontario. Bayesian inference techni...
To explore the geographical distribution and temporal trends of polybrominated diphenyl ethers (PBDEs) in the Great Lakes, lake trout from Lakes Superior, Michigan, Huron, and Ontario and walleye from Lake Erie, collected during the period of 1980-2000, were analyzed. The concentrations of fifteen PBDE congeners and one polybrominated biphenyl (PBB-153) were determined in each fish sample. Lake...
Lake St. Clair is the smallest lake in the Laurentian Great Lakes system. MODIS satellite imagery suggests that high algal biomass events have occurred annually along the southern shore during late summer. In this study, we evaluated these events and tested the hypothesis that summer bloom material derived from Lake St. Clair may enter Lake Erie via the Detroit River and represent an overlooked...
[1] Of more than 400 filled lakes now identified on Titan, the first and largest reported in the southern latitudes is Ontario Lacus, which is dark in both infrared and microwave. Here we describe recent observations including synthetic aperture radar (SAR) images by Cassini’s radar instrument (l = 2 cm) and show morphological evidence for active material transport and erosion. Ontario Lacus li...
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